Number of 3Xn 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303457
Number of 3Xn 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =4a(1) =32a(2) =232a(3) =1690a(4) =12340a(5) =90112a(6) =658204a(7) =4807732a(8) =35118024a(9) =256519346a(10) =1873747524a(11) =13686804048a(12) =99975389852a(13) =730271188300
External references
- oeis: A303457